Kevin O'Connor [Fri, 4 Jul 2008 19:29:23 +0000 (15:29 -0400)]
Define 16bit OFFSET_x to be 32bit addresses; introduce CONFIG_BIOS_ADDR.
The rom16.o object will now have absolute (32bit applicable) addresses.
Replace several 0xf0000 and 0x10000 uses with CONFIG_BIOS_ADDR/SIZE macros.
Kevin O'Connor [Fri, 4 Jul 2008 19:15:49 +0000 (15:15 -0400)]
Add hack to prevent checkstack.py from infinitely recursing (with bad input).
Kevin O'Connor [Fri, 4 Jul 2008 17:10:12 +0000 (13:10 -0400)]
Declare kbd_setup() in post.h - next to other kbd.c defines.
Kevin O'Connor [Fri, 4 Jul 2008 17:04:29 +0000 (13:04 -0400)]
Extract 'struct bregs' out of biosvar.h; clean up header includes.
Kevin O'Connor [Fri, 4 Jul 2008 10:18:30 +0000 (06:18 -0400)]
Breakup rombios32.c into pciinit.c and smbios.c
Kevin O'Connor [Fri, 4 Jul 2008 09:47:26 +0000 (05:47 -0400)]
Separate out smp detection and mp table generation from rombios32.c
Also, change smp_probe() to return the cpu count on each call.
Kevin O'Connor [Fri, 4 Jul 2008 09:05:54 +0000 (05:05 -0400)]
Separate SMM code into its own file (smm.c from rombios32.c).
Kevin O'Connor [Fri, 4 Jul 2008 08:47:09 +0000 (04:47 -0400)]
Clean up #ifdefs.
Remove option CONFIG_USE_EBDA_TABLES -- it's just broken.
Convert several '#if CONFIG_X' to 'if (CONFIG_X)'.
Kevin O'Connor [Sat, 28 Jun 2008 16:19:52 +0000 (12:19 -0400)]
Updates to TODO items.
Kevin O'Connor [Sat, 28 Jun 2008 16:18:39 +0000 (12:18 -0400)]
Set BIOS checksum at 0xfffff.
Kevin O'Connor [Sat, 28 Jun 2008 16:15:57 +0000 (12:15 -0400)]
Improve some debugging output.
Replace DEBUGF calls with dprintf calls.
Make ata calls consistently use 'int' return codes.
Make each error return code in ata.c use a unique negative number.
Kevin O'Connor [Sat, 21 Jun 2008 23:46:43 +0000 (19:46 -0400)]
Scan for and relocate mptable when using coreboot.
Kevin O'Connor [Sat, 21 Jun 2008 16:59:19 +0000 (12:59 -0400)]
Convert '\n' to '\r\n' on debug serial output.
Kevin O'Connor [Sat, 21 Jun 2008 16:24:14 +0000 (12:24 -0400)]
Add code (currently disabled) to mask run away irqs.
Add handler that can react to any unknown hardware irq by masking that
irq. This can be useful for finding/fixing run away irq issues.
Don't currently register these hardware irq handlers
Also, sort and improve default debug levels for bios handlers.
Kevin O'Connor [Sat, 21 Jun 2008 16:15:10 +0000 (12:15 -0400)]
Init serial port before using it for debug - also reinit after option rom.
Apparently, some VGA option roms will enable serial irqs - this could
cause problems with spurious irqs from debug messages.
Also, improve debugging of option roms that fail the checksum check.
Kevin O'Connor [Sat, 21 Jun 2008 15:55:29 +0000 (11:55 -0400)]
PCI fixes
Only set the PIR table signature and checksum in the init function -
that way, if it is disabled at runtime (eg, due to coreboot) then
it wont be found by the OS.
Fix parameter swap bug in handle_1ab102.
Add support for more than one bus in pci scanning code (but only have
1 bus for now).
Kevin O'Connor [Sat, 21 Jun 2008 15:43:32 +0000 (11:43 -0400)]
Make 0xa0000 - 0x10000 a "gap" in the e820 map.
Declaring memory between 0xa0000 - 0x10000 confuses windows, so don't
do that.
Add capability to remove mappings in the memory mapping code.
Kevin O'Connor [Sat, 21 Jun 2008 15:38:21 +0000 (11:38 -0400)]
Minor enhancement to disk failure reporting.
The ata functions return an int not a u8.
Kevin O'Connor [Fri, 20 Jun 2008 04:14:19 +0000 (00:14 -0400)]
Fixup bios.bin.elf building on other versions of ld.
Should use -Tdata instead of -Ttext.
Kevin O'Connor [Wed, 18 Jun 2008 11:45:38 +0000 (07:45 -0400)]
Add header guard around pic.h
This fixes compiling with AVOIDCOMBINE=1
Kevin O'Connor [Sat, 14 Jun 2008 19:56:16 +0000 (15:56 -0400)]
Cleanup handling of interrupt controller (PIC).
Add new file (pic.h) with helpers for accessing the PIC.
Move irq enabling code to the files that use those interrupts.
Also, don't setup for floppy if floppy support not enabled.
Kevin O'Connor [Fri, 13 Jun 2008 02:59:43 +0000 (22:59 -0400)]
Support config driven debugging of each irq handler.
This allows one to easily enable verbose output from handlers.
Kevin O'Connor [Fri, 13 Jun 2008 02:29:30 +0000 (22:29 -0400)]
Wait for RDY bit when resetting ata hard drives.
If the reset doesn't wait for RDY, apparently irqs can get generated
later in the boot which can confuse the OS.
Kevin O'Connor [Fri, 13 Jun 2008 02:22:43 +0000 (22:22 -0400)]
Support relocating coreboot generated acpi rsdp and pir tables.
The coreboot code will now scan the areas marked by CB_MEM_TABLE for
PIR and RSDP tables. If found, they'll be moved to the 0xf0000
segment.
Also, the find_cb_memory() function has been made generic.
Kevin O'Connor [Fri, 13 Jun 2008 02:16:35 +0000 (22:16 -0400)]
Generate PIR table at post time.
Move the predefined PIR table (only useful on emulators) to its own
file - pirtable.c.
Have the pcibios code inspect the pre-built PIR table on 1ab10e
calls.
Kevin O'Connor [Fri, 13 Jun 2008 02:12:48 +0000 (22:12 -0400)]
Add config option CONFIG_ACPI for turning off ACPI table generation.
Kevin O'Connor [Thu, 12 Jun 2008 02:47:01 +0000 (22:47 -0400)]
Move acpi code out of rombios32.c; clean up use of fixed memory addresses.
Move acpi code from rombios32.c to acpi.c.
Move all fixed memory addresses used by the code to config.h and
consistently use a "BUILD_" prefix on the definitions.
Move some pci defs to pci.h - allows access from acpi.c and rombios32.c.
Introduce ALIGN() macro - remove old align function.
Kevin O'Connor [Thu, 12 Jun 2008 02:39:46 +0000 (22:39 -0400)]
Move PIR table definitions to pcibios.h.
Also add a copyright to pci.c.
Kevin O'Connor [Thu, 12 Jun 2008 01:23:24 +0000 (21:23 -0400)]
Support auto-merging e820 maps of same type.
Two bordering e820 maps with the same memory type should merge into
one mapping of the type.
Kevin O'Connor [Mon, 9 Jun 2008 03:09:42 +0000 (23:09 -0400)]
Enhance e820 memory map generation - include files missing from last commit.
Kevin O'Connor [Mon, 9 Jun 2008 03:08:12 +0000 (23:08 -0400)]
Enhance e820 memory map generation.
Build e820 maps at post time; just copy the pre-built ones at runtime.
Add support for populating memory and map info from coreboot.
Kevin O'Connor [Sun, 8 Jun 2008 23:18:33 +0000 (19:18 -0400)]
Move debugging messages to appropriate functions.
Move dprintf calls from post() to the function calls that perform the work.
Kevin O'Connor [Sun, 8 Jun 2008 17:48:06 +0000 (13:48 -0400)]
Separate out ram shadow code and permit more code to write to bios.
Extract shadow code from rombios32.c to its own file - shadow.c.
Reorg post.c so that shadow enable happens early and ram lock happens
late in boot process.
Also, improve some comments in post.c and reorg code slightly.
Kevin O'Connor [Sun, 8 Jun 2008 17:34:43 +0000 (13:34 -0400)]
Properly save/restore %esp high bits.
It turns out that some OSs do call into the bios with junk in the %esp
high bits. So, make sure it is properly cleared and then
saved/restored.
Have the 32bit apm entry point use its own %esp safe entry macro.
Kevin O'Connor [Sat, 7 Jun 2008 19:24:19 +0000 (15:24 -0400)]
Misc minor updates.
Kevin O'Connor [Sat, 7 Jun 2008 19:23:11 +0000 (15:23 -0400)]
Do proper delays when switching devices.
Make sure to msleep(50) when switching the drive.
Also, add some debug messages.
Kevin O'Connor [Sat, 7 Jun 2008 18:51:14 +0000 (14:51 -0400)]
APM fixes; don't save/clear/restore %esp high bits.
Don't worry about %esp high bits - 16bit protected mode may require
the bits to be set. It would be very odd to call into the bios
with junk in %esp high bits.
Fix 32bit apm entry point.
Don't log apm calls 155306/15530b.
Kevin O'Connor [Sat, 7 Jun 2008 18:41:21 +0000 (14:41 -0400)]
Introduce set_fail_silent() helpers.
These functions are equivalent to set_fail() - but don't log an error.
Kevin O'Connor [Sat, 7 Jun 2008 14:43:07 +0000 (10:43 -0400)]
Serial debugging code must not access BDA.
Regular serial writing code uses the system timer to timeout failed
writes - however, serial debugging can't rely on access to the BDA
segment or the hardware timer.
Therefore, implement a simple debug only serial writing function and
separate it from the regular serial output code.
Also include change to dump_regs - don't call __dprintf if debugging
not on.
Kevin O'Connor [Sat, 7 Jun 2008 14:24:48 +0000 (10:24 -0400)]
Verify that option roms don't try to move the ebda block.
Kevin O'Connor [Sat, 7 Jun 2008 14:23:25 +0000 (10:23 -0400)]
Update PCI devid of PIR table.
This devid change synchs code with bochs cvs.
Also fix minor bug causing bus to not be returned in pcibios calls.
Kevin O'Connor [Sat, 7 Jun 2008 14:11:36 +0000 (10:11 -0400)]
Improvements to checkstack.py tool.
Ignore BX_PANIC calls - they shouldn't happen in practice.
Ignore "addr32" prefix when looking at instructions.
Add check for "lcallw" insn.
Don't display redundant calls to the same function (with same stack usage).
Kevin O'Connor [Mon, 26 May 2008 19:19:33 +0000 (15:19 -0400)]
Support config option to disable APM BIOS calls.
New option CONFIG_APMBIOS can be used to disable apm.
Kevin O'Connor [Mon, 26 May 2008 19:06:40 +0000 (15:06 -0400)]
Fix bug causing ata_reset to not wait for BSY to clear.
ata_reset is always called on a valid drive - it shouldn't need to recheck.
All callers expect BSY to be clear upon completion.
This fixes an issue where ata_detect was reading status before drive ready.
Kevin O'Connor [Sun, 25 May 2008 03:46:33 +0000 (23:46 -0400)]
Improve control of debug messages.
Rename BX_INFO() to dprintf() and add a "severity level" parameter.
Add CONFIG_DEBUG_LEVEL compile option to control debug verbosity.
Add more debug info to init steps of post.c.
Kevin O'Connor [Sun, 25 May 2008 03:07:16 +0000 (23:07 -0400)]
PCI enhancements.
Allow one to enable/disable PIR tables separately from PCI BIOS support.
Use standard PORT_* defs for 0xcf8/0xcfc port accesses.
Don't pass PCIDevice pointers around - the struct is small enough to
pass in a register.
Extract out pci_find_device and pci_find_class functions from PCI BIOS
code.
Remove PCI_FIXED_HOST_BRIDGE check - the check is too late if standard
PCI support isn't available. If standard support is available,
then the code should be okay to run.
Kevin O'Connor [Sun, 25 May 2008 03:04:09 +0000 (23:04 -0400)]
Minor cleanup - use usecs instead of msecs.
set_usertimer() takes microseconds, not milliseconds.
Kevin O'Connor [Sun, 18 May 2008 21:12:06 +0000 (17:12 -0400)]
Implement usleep using real time clock.
The old usleep implementation relied on ps2 port refresh bit which is
not very portable.
This patch also refactors some of the code in clock.c.
Kevin O'Connor [Sun, 18 May 2008 21:10:41 +0000 (17:10 -0400)]
Don't initialize keyboard hardware on coreboot - coreboot already does it.
Kevin O'Connor [Sun, 18 May 2008 06:42:58 +0000 (02:42 -0400)]
Initial support for coreboot.
Add new option for targetting a coreboot payload.
When in coreboot mode, configure out those parts of the code that wont
work on real hardware.
Don't include cmos.h in files that don't need it.
Kevin O'Connor [Sun, 18 May 2008 05:43:07 +0000 (01:43 -0400)]
Cleanup ata hard drive detection.
Don't rely on nvram for hd geometry - instead use values autodetected.
Don't outb() to PORT_HD_DATA - was left over from old code.
Reorganize parts of ata_init/ata_detect.
Separate hd geometry translation code to its own functions.
Kevin O'Connor [Sun, 18 May 2008 04:20:53 +0000 (00:20 -0400)]
Establish boot order in post stage.
Read boot order nvram fields in post stage and store in a variable.
Change boot menu to update boot order instead of using separate variables.
Kevin O'Connor [Sun, 18 May 2008 04:14:13 +0000 (00:14 -0400)]
Auto-detect equipment byte info - don't require nvram.
Detect the number of floppies present and add to equipment byte info field.
Kevin O'Connor [Sun, 18 May 2008 04:03:32 +0000 (00:03 -0400)]
Auto detect EBDA_SIZE from size of data structure.
Kevin O'Connor [Sun, 18 May 2008 02:20:27 +0000 (22:20 -0400)]
Unify memory size detection.
Figure out memory size once at startup and save in a variable.
Change all run-time locations to use that variable instead of
re-detecting memory size.
Kevin O'Connor [Wed, 14 May 2008 04:43:13 +0000 (00:43 -0400)]
Add full support for drives with more that 2<<32 sectors.
Use 64bit integers for sector and lba values.
Kevin O'Connor [Wed, 14 May 2008 02:31:39 +0000 (22:31 -0400)]
Sync rombios32.c with bochs cvs.
Use 0x30/0x31 for reading memory size (when EXTMEM2 not found).
Also convert cmos ids to use defined names.
Don't advertise support for suspend c2/c3 levels.
Move uuid_probe closer to usage.
Kevin O'Connor [Wed, 14 May 2008 02:29:42 +0000 (22:29 -0400)]
Fix typo in clock.c outb_cmos call.
Register and value were reversed.
Kevin O'Connor [Tue, 13 May 2008 04:18:20 +0000 (00:18 -0400)]
Reduce ide stack usage by reorganizing ata calls.
Break up some functions and play with inlining to reduce stack usage.
Kevin O'Connor [Tue, 13 May 2008 03:50:16 +0000 (23:50 -0400)]
Add tool to check stack usage of 16bit code.
This tool analyzes the assembler and can approximate the stack usage
of the various entry points.
Kevin O'Connor [Tue, 13 May 2008 03:44:57 +0000 (23:44 -0400)]
Add compile options to reduce stack usage.
Add -fno-defer-pop
Add --param large-stack-frame=8 to prevent stack explosion on gcc 4.3.
Kevin O'Connor [Mon, 12 May 2008 22:28:58 +0000 (18:28 -0400)]
Use a linker script for 16bit code.
With a linker script the data sections can be grouped by themselves
instead of being dispersed throughout the code.
Kevin O'Connor [Sat, 10 May 2008 19:49:20 +0000 (15:49 -0400)]
Fix elf build; rename target file rom.bin to bios.bin.
The main output file is now called out/bios.bin (instead of out/rom.bin).
Use ld to build final elf file and call the result out/bios.bin.elf
Make sure to long jump from external 32bit entry point.
Kevin O'Connor [Fri, 9 May 2008 01:47:33 +0000 (21:47 -0400)]
Support 32bit entry point and an elf wrapped binary.
Kevin O'Connor [Thu, 8 May 2008 01:29:50 +0000 (21:29 -0400)]
Add support for sending debug messages to a serial port.
Enable by turning on CONFIG_DEBUG_SERIAL option.
Kevin O'Connor [Wed, 7 May 2008 00:00:12 +0000 (20:00 -0400)]
This patch does:
- Rename BX_* options to CONFIG_* (rombios32.c)
- Add QEMU_SUPPORT compile time option (config.h)
- Properly check compile options, so we can turn off them by assigning
them values of 0s. (rombios32.c)
Signed-off-by: Nguyen Anh Quynh <aquynh@gmail.com>
Kevin O'Connor [Tue, 6 May 2008 23:49:01 +0000 (19:49 -0400)]
Minor cleanups.
Several minor comment improvements.
Rearrange some definitions to make them more clear.
Kevin O'Connor [Fri, 25 Apr 2008 00:43:24 +0000 (20:43 -0400)]
Expand floppy_ret to show function names when return code is a failure.
Kevin O'Connor [Sun, 13 Apr 2008 22:17:02 +0000 (18:17 -0400)]
Compile fixes for gcc 4.3.
Clean up some warnings.
Make sure floppy_dbt structure is aliagned to 1 byte boundary.
Kevin O'Connor [Sun, 13 Apr 2008 21:37:41 +0000 (17:37 -0400)]
Move timer setup from post.c to clock.c.
Kevin O'Connor [Sun, 13 Apr 2008 21:31:45 +0000 (17:31 -0400)]
Move serial/lpt setup from post.c to serial.c
Kevin O'Connor [Sun, 13 Apr 2008 21:25:30 +0000 (17:25 -0400)]
Move hard drive init from post.c to ata.c.
Kevin O'Connor [Sun, 13 Apr 2008 21:07:33 +0000 (17:07 -0400)]
Move floppy setup code from post.c to floppy.c.
Kevin O'Connor [Sun, 13 Apr 2008 20:59:49 +0000 (16:59 -0400)]
Fix typo causing fdpt1 from structure from being populated.
Also, remove redundant call to init_boot_vectors().
Kevin O'Connor [Sun, 13 Apr 2008 20:59:03 +0000 (16:59 -0400)]
Add compile options to Makefile to reduce stack space.
Kevin O'Connor [Sun, 13 Apr 2008 20:57:16 +0000 (16:57 -0400)]
Use __always_inline to force inlining.
Before, inline was enough to force inlining.
Kevin O'Connor [Sat, 12 Apr 2008 13:03:34 +0000 (09:03 -0400)]
Fix asm dependencies on segment based writes.
The variable was marked as an input instead of an output.
This could cause gcc bugs - it also forced the asm to be volatile.
Kevin O'Connor [Sat, 12 Apr 2008 13:01:23 +0000 (09:01 -0400)]
Fix bug causing low memory configs to be off by 1024 in e820 maps.
Kevin O'Connor [Sat, 12 Apr 2008 13:00:40 +0000 (09:00 -0400)]
Fix typo - a memcpy should have been memset in rombios32.c
Kevin O'Connor [Sat, 12 Apr 2008 13:00:04 +0000 (09:00 -0400)]
Memset should return 'void *' - just to conform to standards.
Kevin O'Connor [Sun, 6 Apr 2008 01:08:57 +0000 (21:08 -0400)]
Fix bug causing write corruption on large disks.
Writes past 1<<28 sectors were not correct - corruption occurs.
Kevin O'Connor [Sun, 6 Apr 2008 01:07:21 +0000 (21:07 -0400)]
Port fix from bochs-bios for incorrect acpi on boxes < 16M.
Kevin O'Connor [Sat, 5 Apr 2008 23:30:02 +0000 (19:30 -0400)]
Introduce cpu_relax() and use it in busy loops.
Kevin O'Connor [Sat, 5 Apr 2008 19:51:12 +0000 (15:51 -0400)]
Forward port new boot menu features from bochs bios.
Support boot menu during last stage of post.
Improve description of option roms.
Support printf of "%.s" to force printing strings on stack.
Enhance memcpy so that it also works in real-mode.
Kevin O'Connor [Sat, 5 Apr 2008 15:37:51 +0000 (11:37 -0400)]
Make several functions non-inline.
Kevin O'Connor [Sat, 5 Apr 2008 14:47:13 +0000 (10:47 -0400)]
Add s64 type to types.h.
Kevin O'Connor [Wed, 2 Apr 2008 01:09:05 +0000 (21:09 -0400)]
Minor enhancements to README file.
Kevin O'Connor [Tue, 1 Apr 2008 01:56:04 +0000 (21:56 -0400)]
Don't clobber %esp highbits on C code entry.
Theoretically, %esp high bits could be set - the C code will use %esp
(not %sp), so these bits need to be zeroed. However, they can't
be clobbered, so the entry code needs to save/restore it.
Also improve some comments in romlayout.S
Kevin O'Connor [Mon, 31 Mar 2008 03:32:19 +0000 (23:32 -0400)]
Avoid using volatile on GET/SET_VAR macros.
Instead of using volatile, use a dummy variable definition so the
compiler can track the link between segment updates and accesses.
This gives gcc more flexibility in instruction scheduling.
Also update GET/SET_VAR macros to support signed integer variants.
Kevin O'Connor [Mon, 31 Mar 2008 03:22:39 +0000 (23:22 -0400)]
Minor cleanup of GET_VAR usage in output.c.
Don't cast to a u8 - instead, cast the pointer to a u8*.
Kevin O'Connor [Mon, 31 Mar 2008 01:46:53 +0000 (21:46 -0400)]
Minor cleanups.
Rename EBDA_SEG to SEG_EBDA - it is more consistent with other defs.
Introduce SEG_BDA definition and use it instead of 0x0000 wherea appropriate.
Move ACPI_DATA_SIZE to CONFIG_ACPI_DATA_SIZE and move to config.h
Use an alias (PORT_HD_DATA) for io port 0x03f6.
Kevin O'Connor [Sun, 30 Mar 2008 15:07:42 +0000 (11:07 -0400)]
Update README file with more information on using the bios.
Kevin O'Connor [Sat, 29 Mar 2008 18:29:35 +0000 (14:29 -0400)]
Unify checksum functions.
Several checksum functions were scattered through source - use just one.
Kevin O'Connor [Sat, 29 Mar 2008 18:28:00 +0000 (14:28 -0400)]
Fix bugs in GET/SET_FARPTR macros.
Kevin O'Connor [Sat, 29 Mar 2008 18:04:34 +0000 (14:04 -0400)]
Cleanup boot order determination.
Determining which device to boot from should not depend on CONFIG_CDROM_BOOT
Instead, always use the cmos 0x38/0x3d for determining boot order.
Kevin O'Connor [Sat, 29 Mar 2008 17:15:36 +0000 (13:15 -0400)]
Merge IPL segment into EBDA segment.
It does not appear that IPL info needs to be at exactly 0x9ff00.
Have IPL struct be part of ebda structure - it prevents unintended overlaps.
Also, ATA structs don't need to be packed.
Kevin O'Connor [Sat, 29 Mar 2008 16:53:57 +0000 (12:53 -0400)]
Refactor ata code.
Have await_ide return status code (so callers don't need to reread status).
Introduce pause_await_ide for cases where we need to wait an ata cycle.
Implement 400ns wait according to ata specs.
Consistently used 'driveid' instead of 'biosid', 'devid', 'device'.
Unify cdrom and hd transfer code into single function - ata_transfer.
Use less inlining.
Remove unused ebda variable 'trsfbytes'.
Kevin O'Connor [Sat, 29 Mar 2008 16:45:53 +0000 (12:45 -0400)]
Reorder basic_access() to reduce stack usage.
Kevin O'Connor [Sat, 29 Mar 2008 16:44:32 +0000 (12:44 -0400)]
Minor debugging improvements.
Support '%p' format in bprintf.
Display pointer of register in debug output (useful for calculating
start stack).
Kevin O'Connor [Sun, 23 Mar 2008 04:04:54 +0000 (00:04 -0400)]
Move internal defs from ata.h to ata.c.
With -fwhole-program it is not necessary to put inline functions into
headers. So, move the internal defs and code to ata.c.